Update changelog

CHANGELOG.md

@@ -8,7 +8,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 ### Changed
- - `zarrs_ome` fix axis unit parsing (broken in 0.5.3)
  - [#12](https://github.com/LDeakin/zarrs_tools/pull/12) Bump netcdf to 0.10.2 by [@magnusuMET]
  - **Breaking**: Bump MSRV to 1.80
  - Bump `sysinfo` to 0.31
@@ -20,6 +19,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
    - **Breaking**: Removed `concat-dim` argument. Concatenation is now only supported along the first (slowest varying) dimension
    - This tool is intended to be replaced by chunk manifests when the specification and `virtualizarr` matures
 
+### Fixed
+ - `zarrs_ome` fix axis unit parsing (broken in 0.5.3)
+
 ## [0.5.5] - 2024-07-31
 
 ### Added